Amazon error 99016: The attribute occurs more often than allowed
What does it mean?
The same attribute was sent more times than the maximum.
How to fix it
Remove the duplicate entries in your feed tool.
Where do you fix it?
- In your feed tool: mapping, rule or channel setting
- 90057The field contains an invalid value
- 8105Attribute data does not match the list of valid values
- 90111Invalid value, for example not a valid number or currency
- 90114The value is lower than the minimum allowed
- 90221The value must be greater than the limit
- 90197The value is greater than the allowed maximum
- 90226The value is shorter than the allowed minimum
- 90117The value exceeds the maximum length
Source
Summarised in our own words; Amazon's page is leading.